20160587 Ver 1_Add Info Packet 2 of 3_20170207

Hemlock Grove Bridge Culvert

Channel Section below Bridge Culvert -Hemlock Grove Rei.
Project Description
Friction Method
Solve For
Input Data
Roughness Coefficient
Channel Slope
Left Side Slope
Right Side Slope
Bottom Width
Discharge
Results
Normal Depth
Flow Area
Wetted Perimeter
Hydraulic Radius
Top Width
Critical Depth
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Flow Type
GVF Input Data
Downstream Depth
Length
Number Of Steps
GVF Output Data
Upstream Depth
Profile Description
Profile Headless
Downstream Velocity
Upstream Velocity
Normal Depth
Critical Depth
Channel Slope
Manning Formula
Normal Depth
Subcrrical
0.078
0.05880 fill
3.00 ft/ft (H:V)
300 ftlft (H:V)
8.00 If
542.40 fPls
3.64 If
68.96 ft'
31.04 It
2.22 It
29.86 f1
3.48 It
0.07151 ft/ft
7.87 fus
0.96 It
4.60 it
0.91
0.00 it
0.00 It
0
0.00 ft
0.00 It
Infinity fus
Infinity ft/,
3.64 ft
3.48 It
0.05880 tuft
Bentley Systems, Inc. Haestad Methods SolfftwM€JeStowMaster V8i (SELECTserles t) [08.11.01.031
1122/201710:28.47 AM 27 Siernons Company Drive Suite 200 W Watertown, CT 06796 USA [phone] Page 1 of 2

Channel S4 Improvements

Channel S4 - Q 100
Project Description
Friction Method
Manning Formula
ft
Solve For
Normal Depth
W
Input Data
13.91
ft
Roughness Coefficient
0.078
ft
Channel Slope
0.11000
fuft
Left Side Slope
1.25
ft/ft (H:V)
Right Side Slope
1.50
ft/ft (H:V)
Bottom Width
8.00
It
Discharge
135.60
ft'/s
Results
2.61
ft
Normal Depth
1.74
ft
Flow Area
18.05
W
Wetted Perimeter
13.91
ft
Hydraulic Radius
1.30
ft
Top Width
12.78
ft
Critical Depth
1.85
It
Critical Slope
0.08727
fl/ft
Velocity
7.51
f/s
Velocity Head
0.88
ft
Specific Energy
2.61
ft
Froude Number
1,11
Flow Type
Supercritical
GVF Input Data
Downstream Depth
0.00
ft
Length
0.00
ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
ft
Profile Description
Profile Headloss
0.00
ft
Downstream Velocity
Infinity
fUs
Upstream Velocity
Infinity
ft/s
Normal Depth
1.74
ft
Critical Depth
1.85
ft
Channel Slope
0.11000
ft/ft
Bentley Systems, Inc. Hpestad Methods Sol OtpnW*FitowMaster Vei (SELECTseries 1) [08.11.01.03)
1/26/2017 12:47:39 PM 27 Siemens Company Drive Suite 200 W Watertown, CT 06795 USA +1-203.755-1666 Page 1 of 2

Center Cove Road Culvert Replacement/Repair/Addition Area S5

S5 Culvert Replacement/Addition Area Center Cove Road
Flow is intermittent.
Currently there are two 15 -inch CMP culverts in damaged condition that carry flow under
Center Cove Road in a reduced capacity.
Current Plan is to replace one 15 -inch CMP with a 24 inch HDPE pipe culvert, replace
the second 15-inchCMP with a new 15 -inch pipe culvert and add a third pipe, a second
24 -inch HDPE culvert in parallel.
The peak flow during the 25 year event is estimated Q 25 = 50.5 CFS
Area 24 inch HDPE = 3.14 sf
Area 15 inch CMP = 1.22 s£
Two, 24 -inch pipes + One, 15 -inch pipes = 7.51 sf total area
By Ratio: Each 24" HDPE pipe conveys 22 cfs with an HW/D of 1.4
The 15" CMP pipe conveys 8 cfs with an HW/D of 2.2
See inlet control Headwater charts following.
Install Two -24 inch pipe culverts and build up road bed with CABC to provide 1 ft. cover
over the 24 inch pipe culverts.
Bury inverts of 24" HDPE Culverts, 6 inches (one replaces existing damaged 15" cmp).
Hw/D provided = 1.5 for the 24 inch and 2.4 for the 15 inch, Therefore combination of
pipe culverts can convey the 25 year event without overtopping Center Cove Road.

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Normal Depth
S5- NEW 24"
HDPE pipe culverts
Project Description
2.49
W
Friction Method
Manning Formula
it
Solve For
Normal Depth
ft
Input Data
1.75
ft
Roughness Coefficient
1.68
0.012
Channel Slope
74.0
0.01000 ft/ft
Diameter
0.00777
2.00 ft
Discharge
8.83
22.00 W/s
Results
1.21
ft
Normal Depth
1.48
ft
Flow Area
2.49
W
Wetted Perimeter
4.14
it
Hydraulic Radius
0.60
ft
Top Width
1.75
ft
Critical Depth
1.68
ft
Percent Full
74.0
%
Critical Slope
0.00777
ft/ft
Velocity
8.83
ft/s
Velocity Head
1.21
ft
Specific Energy
2.69
ft
Froude Number
1.31
Maximum Discharge
26.36
ft3/s
Discharge Full
24.51
fl'/s
Slope Full
0.00806
ft/ft
Flow Type
Super -Critical
GVF Input Data
Downstream Depth
0.00
ft
Length
0.00
It
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
ft
Profile Description
Profile Headloss
0.00
ft
Average End Depth Over Rise
0.00
%
Normal Depth Over Rise
74.01
%
Downstream Velocity
Infinity
ft/s
Bentley Systems, Inc. Haestad Methods SOIRiuWO,efileNMaster V8i (SELECTserles 1) [08.11.01.031
1/27/2017 10:22:32 AM 27 Siemens Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 2